Sarnkham, Thodsatham, and Pramaha Supavit Paphatsaro. “Administration According to the Strength force Power of the School director under Secondary Education Area office Loei – Nong Bua Lam Phu”. Journal of Graduate Saket Review 7, no. 2 (December 31, 2022): 130–139. accessed September 15, 2026. https://so03.tci-thaijo.org/index.php/saketreview/article/view/260917.